No one getting cranky here
just an interesting discussion.
My info only comes from the WEB pages I linked above as I started riding in '71 so a '69 Monty is before my time but they look great
.
The '69 360GP was a 4 speed as all 360 Monty MXers where as far as I know. It took most of the Japanese brands until the '80s to work out that an open class MXer only needed 4 speeds
The VB360 can have the 5 speed from the VB250 installed or just put the VB360 cylinder on the VB250 bottom end if you are crazy enough.
As Montesa was a relatively small factory (although much bigger than Bultaco or Ossa) things changed through the production cycle. Looking through the VR250 parts book today (kindly lent by Ross
) there are actually three distinct VR250 models yet only the '73 VR and '74 VR are ever discussed. So maybe you are correct that the '69 250GP started as a 4 speed and was updated mid model to 5 speed. I don't think we can say absolutely.